KR20220117660A - Steadily fixing device - Google Patents

Abstract

Disclosed is a steadily fixing device comprising: a rectangular pillar-shaped mounting arm which is located on a bucket and is connected to the bucket through an arm cylinder located on one side and a coupling link located below; a rotating gripper which is located on the other side of the mounting arm, is rotatably fixed to the mounting arm, protrudes from the mounting arm, and is located between the bucket and the mounting arm; and a detachment induction cylinder which is located on the other side of the mounting arm, includes a cylinder tube and a piston rod, each of which is rotatably fixed to the mounting arm and the rotating gripper, and rotates the mounting arm during the relative reciprocating motion of the piston rod relative to the cylinder tube. The mounting arm, rotating gripper, or detachment induction cylinder has a detachment fusion part in the area occupied by the rotating gripper on the mounting arm. Therefore, the present invention can minimize undesired mechanical contact or friction noise.

Description

Stabilization Fixtures {STEADILY FIXING DEVICE}

The present invention relates to a stable detachment device provided in an excavator and interlocking with the movement of the bucket while supporting the bucket of the excavator.

These days, excavators are often used to transport wood, stone and waste concrete at construction sites, waste collection sites, or demolition sites with a pair of buckets and tongs. Due to this, the excavator makes it possible to achieve work efficiency while reducing input manpower despite the increase in the load and volume of the work object at a construction site, a waste collection site, or a demolition site.

To this end, as shown in Figures 1 and 2, the excavator 100 according to the prior art, the arm cylinder 20 and the coupling link 30, 40 coupled to each other on one side of the mounting arm (arm; 13) ), having a bucket 50 connected to the coupling links 30 and 40 under the mounting arm 13, and rotating tongs 70 and a detachment induction cylinder 90 on the other side of the mounting arm 13 ) is provided.

Here, as shown in FIG. 1 , the mounting arm 13 has first to third bending resistance reinforcement bars 1, 2, 3 on one surface along the longitudinal direction of the mounting arm 13 from the other side of the mounting arm 13 . ) and has a fixing bracket (7). The rotary tongs 70 have coupling tubes 64 and 68 at the coupling sites of the rotary tongs 70 and the detachment induction cylinder 90 . The rotating tongs 70 rotate relative to the detachment induction cylinder 90 through the coupling tubes 64 and 68 .

The detachment induction cylinder 90, as shown in FIG. 1, has a piston rod 84 accommodated in a cylinder tube 86, and the piston rod 84 is coupled to the coupling tubes 64 and 68 of the rotary clamp 70. ) with a rod head 82 between them. The rotating tongs 70 and the detachment induction cylinder 90 are rotationally fixed to the mounting arm 13 to have a triangular coupling relationship with the mounting arm 13 approximately as shown in FIG. 1 , and are fixed to each other on the mounting arm 13 is hinged against.

Therefore, while the arm cylinder 20 and the detachment induction cylinder 90 are driven, as shown in FIG. 1 , the bucket 50 and the rotating tongs 70 rotate to move toward each other or to move away from each other (R1, R2) becomes. When the excavator 100 uses only the bucket 50 without using the bucket 50 and the rotary tongs 70 together depending on the work site, the rotary tongs 70 use the detachable induction cylinder 90 using It is closely attached to the mounting arm 13 as much as possible.

Specifically, as shown in FIG. 1 , the rotary tongs 70 are attached to the mounting arm 13 and the piston rod 84 when the piston rod 84 is protruded from the cylinder tube 84 in the detachment induction cylinder 86 . Relatively rotated (R2) to operate with the bucket 50 to cover the inner portion of the bucket 50, for example, the recess (凹部) portion.

In addition, as shown in FIG. 1 , the rotary tongs 70 are relatively to the mounting arm 13 and the piston rod 84 when the piston rod 84 is depressed in the cylinder tube 86 in the detachment induction cylinder 86 . It is rotated (R2) and moved toward the mounting arm 13 to open the inner portion of the bucket 50 so as to be in close contact with the mounting arm 13 as much as possible.

However, as shown in FIG. 2, the tube rotation shaft 95 passing through the fixing bracket 7 and the cylinder tube 86 has the first to third bending resistance reinforcements 1, 2, 3), the cylinder tube 86 performs a stroke movement of the piston rod 84 when the detachment induction cylinder 90 pulls the rotation clamp 70 toward the mounting arm 13 while being positioned at the same level as 3). Before completion, it is inclined toward the second bending-resisting reinforcement (2) from the fixing bracket (7) and contacts the second bending-resisting reinforcement (2).

Before completion of the stroke movement of the piston rod 84 , the piston rod 84 protrudes from the cylinder tube 86 by 2-3 mm. In the contact state between the cylinder tube 86 and the second bending resistance reinforcement 2 , in order to complete the movement of the stroke of the piston rod 84 , as shown in FIG. 2 , the cylinder tube 86 is hydraulic The piston rod 84 is shaken together with the piston rod 84 through the in and out of hydraulic pressure while gradually receiving the piston rod 84 along one direction M1 and repeatedly hits the second bending resistance reinforcement 2 .

The repeated collision between the cylinder tube 86 and the second bending resistance reinforcement 2 prevents the piston rod 84 from entering and leaving the cylinder tube 86 while lowering the durability compared to the initial shape of the cylinder tube 86 . This continuously creates unwanted mechanical contact or friction noise between the cylinder tube 86 and the piston rod 84 .

In order to solve the repeated collision between the cylinder tube 86 and the second bending resistance reinforcement 2 , the shape of the second bending resistance reinforcement 2 may be deformed. That is, as shown in FIG. 3 , the second bending resistance reinforcing bar 2 is reduced by a predetermined length L to form a second bending resistance reinforcing bar 5 .

Here, the cylinder tube 86 is positioned between the first and third bending resistance reinforcement bars 1 and 3 so as not to collide with the second bending resistance reinforcement rod 5, but the stroke movement of the piston rod 84 is completed. 1, since the rod head 82 has a larger outer diameter than the coupling tubes 64 and 68, the rod head 82 unsafely and obliquely contacts the second bending resistance reinforcement 5. As shown in FIG. Before completion of the stroke movement of the piston rod 84 , the piston rod 84 protrudes from the cylinder tube 86 by 2-3 mm.

As the service life of the excavator 100 increases, the hinge portion of the arm 13 and the rotating tongs 70, or the hinge portion of the coupling tubes 64 and 68 and the rod head 82, or the cylinder tube ( 84) and the hinge portion of the fixing bracket 7 have progressively larger mechanical tolerances around the rotation axis (not shown in the drawing) compared to the original shape through repeated friction.

Therefore, when the rod head 82 is in contact with the second bending resistance reinforcement 5 , in order to complete the stroke movement of the piston rod 84 , the cylinder tube 86 is When pulling 84), the hinge portion of the mounting arm 13 and the rotating tongs 70, or the hinge portion of the coupling tubes 64 and 68 and the rod head 82, or the cylinder tube 84 and the fixing bracket ( The hinge portion of 7) is not in close contact with the second bending resistance reinforcement 5 or the rotating shaft, thereby continuously generating unwanted mechanical contact or friction noise while hydraulic pressure is applied to and from the cylinder tube 86.

The present invention has been devised to solve the problems of the prior art, provided with a mounting arm, a rotating tongs, and a detachment induction cylinder on a bucket in an excavator, while operating the movement of the bucket and rotating tongs in the excavator, bending of the mounting arm Without contacting the cylinder tube of the detachment induction cylinder to the resistance reinforcing bar, attach the hinge portion of the mounting arm and the rotary tongs, or the hinge portion of the coupling tube and the rod head, or the hinge portion of the cylinder tube and the fixing bracket to the mounting arm or the rotating shaft. It is an object of the present invention to provide a stable detachment device suitable for minimizing unwanted mechanical contact or friction noise.

The stable detachment device according to the present invention is provided in the excavator to support the bucket of the excavator and interlock with the movement of the bucket, the arm cylinder located on the bucket and located on one side and the lower position a mounting arm having a rectangular pillar shape coupled to the bucket through a coupling link; Rotating tongs positioned on the other side of the mounting arm, rotationally fixed to the mounting arm, and positioned between the bucket and the mounting arm while protruding from the mounting arm; and a cylinder tube and a piston rod that are located on the other side of the mounting arm and are respectively rotationally fixed to the mounting arm and the rotating tongs while connecting the mounting arm and the rotating tongs, and the relative reciprocation of the piston rod compared to the cylinder tube and a detachment induction cylinder for rotating the mounting arm during movement, wherein the mounting arm or the rotating tongs or the detachment inducing cylinder has a detachable ridge on the occupied area of the rotating tongs on the mounting arm, during the reciprocating motion of the piston rod, When the detachment-inducing cylinder pulls the rotary tongs toward the mounting arm, the rotary tongs or the detachment-inducing cylinder are indirectly attached to the mounting arm before the completion of the stroke movement of the piston rod through the detachable ridge. and, after completion of the movement of the stroke of the piston rod, the rotating tongs and the detachment induction cylinder are firmly attached to the mounting arm.

The mounting arm includes, when viewed from the other side of the mounting arm, first to third bending resistance reinforcing bars positioned in the first region of the mounting arm from one surface of the mounting arm, and the one surface of the mounting arm. and a fixing bracket positioned in the second region of the mounting arm, wherein the first to third bending resistance reinforcing bars are parallel to and sequentially at right angles to the longitudinal direction of the mounting arm from the one surface of the mounting arm. and positioned below the fixing bracket on the one side of the mounting arm, the fixing bracket surrounding a tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm, the tube rotation shaft, It may be positioned at a higher level than the first to third bending resistance reinforcing bars based on the one surface of the mounting arm.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the first to third bending reinforcing bars through the one end of the rotary tongs and surrounds the arm rotation axis penetrating the both surfaces, , located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, and surrounding a head rotation shaft passing through the rod head, and having coupling tubes that rotate relative to the rod head, The coupling tubes may face the first and third bending-resisting reinforcing bars, and the rod head may face the second bending-resisting reinforcing bars.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the movement of the stroke of the rod, the second bending resistance reinforcing bar is in contact with the second bending resistance reinforcement through the detachable ridge located on the rod head, and toward the fixing bracket to complete the movement of the stroke of the piston rod. Sliding the detachable ridge on the second bending resistance reinforcement while pulling the rod head and the coupling tubes, and after completing the execution of the stroke movement of the piston rod, the second bending resistance reinforcement near the cylinder tube. By firmly adhering the detachable ridge, the cylinder tube may be spaced apart from the second bending resistance reinforcement in parallel.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the first to third bending reinforcing bars through the one end of the rotary tongs and surrounds the arm rotation axis penetrating the both surfaces, , located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, and surrounding a head rotation shaft passing through the rod head, and having coupling tubes that rotate relative to the rod head, The coupling tubes may have the detachable ridges facing the first and third bending resistance reinforcing bars.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the execution of the stroke movement of the rod, while facing the rod head and the second bending resistance reinforcement, the detachable ridges located in the coupling pipes are brought into contact with the first and third bending resistance reinforcement rods, and the In order to complete the movement of the stroke of the piston rod, while pulling the rod head and the coupling tubes toward the fixing bracket, the detachable ridges are slid on the first and third bending resistance reinforcing bars, and the stroke of the piston rod After completion of the movement, the detachable ridges may be firmly in close contact with the first and third bending resistance reinforcements near the cylinder tube to parallelly space the cylinder tube from the second bending resistance reinforcement rods.

The mounting arm includes, when viewed from the other side of the mounting arm, first to third bending resistance reinforcing bars positioned in the first region of the mounting arm from one surface of the mounting arm, and the one surface of the mounting arm. and a fixing bracket positioned in the second region of the mounting arm, wherein the first to third bending resistance reinforcing bars are parallel to and sequentially at right angles to the longitudinal direction of the mounting arm from the one surface of the mounting arm. and positioned below the fixing bracket on the one side of the mounting arm, the fixing bracket surrounding a tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm, the tube rotation shaft, Located at a higher level than the first to third bending resistance reinforcing bars with respect to the one surface of the mounting arm, the detachable ridges, the first to third bending resistance reinforcing bars, and the second between the fixing bracket It is positioned closer to the first and third bending reinforcement than the second bending resistance reinforcement, and may protrude higher than the first to third bending resistance reinforcement from the one surface of the mounting arm.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the first to third bending reinforcing bars through the one end of the rotary tongs and surrounds the arm rotation axis penetrating the both surfaces, , located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, and surrounding a head rotation shaft passing through the rod head, and having coupling tubes that rotate relative to the rod head, Both edges of the rotating tongs may face the detachable ridge.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the execution of the stroke movement of the rod is completed, the both edges of the rotary tongs are brought into contact with the detachable ridges positioned close to the first and third bending resistance reinforcing bars in the mounting arm, and the stroke movement of the piston rod In order to complete the execution of, slide the rotary tongs on the detachable ridge while pulling the rod head and the coupling tubes toward the fixing bracket, and after completing the execution of the stroke movement of the piston rod, the first and The cylinder tube may be spaced in parallel from the second bending resistance reinforcement by firmly attaching the both edges of the rotary tongs to the detachable ridges near the third bending resistance reinforcement.

The mounting arm includes, when viewed from the other side of the mounting arm, first to third bending resistance reinforcing bars positioned in the first region of the mounting arm from one surface of the mounting arm, and the one surface of the mounting arm. and a fixing bracket positioned in the second region of the mounting arm, wherein the first to third bending resistance reinforcing bars are parallel to and sequentially at right angles to the longitudinal direction of the mounting arm from the one surface of the mounting arm. and positioned below the fixing bracket on the one side of the mounting arm, the fixing bracket surrounding a tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm, the tube rotation shaft, Positioned at a higher level than the first to third bending-resisting reinforcing bars with respect to the one surface of the mounting arm, the detachable ridges may include the first to third bending-resisting reinforcing bars on the lower side of the first to third bending-resisting reinforcing bars. It may be located on the third bending resistance reinforcement to connect the first to third bending resistance reinforcement.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the first to third bending reinforcing bars through the one end of the rotary tongs and surrounds the arm rotation axis penetrating the both surfaces, , located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, and surrounding a head rotation shaft passing through the rod head, and having coupling tubes that rotate relative to the rod head, The coupling tubes and the rod head may face the detachable ridge.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the execution of the stroke movement of the rod, the rod head is brought into contact with the detachable ridge, and the rod head and the coupling tubes are pulled toward the fixing bracket to complete the execution of the stroke movement of the piston rod. while sliding the rod head on the detachable ridge, and after completing the execution of the stroke movement of the piston rod, firmly attach the rod head to the detachable ridge on the first to third bending resistance reinforcing bars The cylinder tube may be spaced apart from the second bending resistance reinforcement in parallel.

The mounting arm includes, when viewed from the other side of the mounting arm, a fixing bracket positioned on one surface of the mounting arm and a detachable protrusion, and the fixing bracket includes the cylinder tube on the one surface of the mounting arm. Surrounding the tube rotation shaft passing through, the detachable ridge is located on the one surface of the mounting arm, and when viewed in a direction perpendicular to the one surface of the mounting arm, in the area occupied by the detachable ridge, the mounting arm and It fills the space between the cylinder tubes, and consists of first to third protrusions positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm under the fixing bracket, and based on the one surface of the mounting arm. to be positioned at a lower level than the tube rotation axis, and the first and third ridges are located on both sides of the cylinder tube and the piston rod when viewed from one surface of the mounting arm, and the second ridges, It has a smaller length than the first and third ridges and may be located below the piston rod.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the detachable ridge through the one end of the rotation tongs and surrounds the arm rotation shaft penetrating the both sides, the rotation tongs having coupling pipes positioned on both sides of the rod head positioned at the ends of the piston rod in the central region of It may face the first and third protrusions, and the rod head may face the second protrusions.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the execution of the stroke movement of the rod, the rod head is brought into contact with the second protrusion, and the rod head and the coupling tubes are connected toward the fixing bracket to complete the execution of the stroke movement of the piston rod. Sliding the rod head on the second ridge while pulling, and after completing the execution of the stroke movement of the piston rod, firmly attach the rod head to the second ridge to firmly attach the first and third ridges The first and third protrusions and the coupling tubes may face each other while inserting the cylinder tube between the bases.

The mounting arm includes a fixing bracket positioned on one side of the mounting arm when viewed from the other side of the mounting arm, wherein the fixing bracket passes through the cylinder tube on the one surface of the mounting arm Surrounding the tube rotation shaft, the detachable ridges are located on both edges of the one surface on the one surface of the mounting arm, and when viewed in a direction perpendicular to the one surface of the mounting arm, in the area occupied by the detachable ridges It fills the space between the mounting arm and the cylinder tube, and consists of first and second ridges located in parallel and sequentially at right angles to the longitudinal direction of the mounting arm under the fixing bracket, and the one surface of the mounting arm is formed. It is positioned at a level lower than that of the tube rotation shaft as a reference, and the first and second ridges may be positioned on both sides of the cylinder tube and the piston rod when viewed from one surface of the mounting arm.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the detachable ridge through the one end of the rotation tongs and surrounds the arm rotation shaft penetrating the both sides, the rotation tongs having coupling pipes positioned on both sides of the rod head positioned at the ends of the piston rod in the central region of It may face the first and second raised portions.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the execution of the stroke movement of the rod, the coupling tubes are brought into contact with the first and second ridges, and the rod head and the rod head toward the fixing bracket to complete the execution of the stroke movement of the piston rod. Sliding the coupling pipes on the first and second ridges while pulling the coupling pipes, and after completing the performance of the stroke movement of the piston rod, firmly tighten the coupling pipes on the first and second elevations The cylinder tube may be inserted between the first and second raised portions by closely contacting them.

The mounting arm includes a fixing bracket positioned on one side of the mounting arm when viewed from the other side of the mounting arm, wherein the fixing bracket passes through the cylinder tube on the one surface of the mounting arm Surrounding the tube rotation shaft, the detachable ridges are located on both edges of the one surface on the one surface of the mounting arm, and when viewed in a direction perpendicular to the one surface of the mounting arm, in the area occupied by the detachable ridges It fills a space between the mounting arm and the piston head, and consists of first and second protrusions sequentially positioned in parallel and at right angles to the longitudinal direction of the mounting arm under the fixing bracket, the one surface of the mounting arm It is positioned at a lower level than the tube rotation axis with respect to the reference, and the first and second ridges may be located on both sides of the rod head in the piston rod when viewed from the one surface of the mounting arm.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is located on both sides at right angles to the one surface of the mounting arm under the detachable ridge through the one end of the rotation tongs and surrounds the arm rotation shaft penetrating the both sides, the rotation tongs having coupling pipes positioned on both sides of the rod head positioned at the ends of the piston rod in the central region of , may face the first and second ridges.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the execution of the stroke movement of the rod, the coupling tubes are brought into contact with the first and second ridges, and the rod head and the rod head toward the fixing bracket to complete the execution of the stroke movement of the piston rod. Sliding the coupling pipes on the first and second ridges while pulling the coupling pipes, and after completing the performance of the stroke movement of the piston rod, firmly tighten the coupling pipes on the first and second elevations can be attached.

During the reciprocating motion of the piston rod, when the detachment induction cylinder pulls the rotary tongs toward the mounting arm, the coupling tubes of the rotary tongs and the rod head of the piston rod have the same phase. is positioned in the coupling tubes or the rod head to ensure that, during the reciprocating motion of the piston rod, when the detachment induction cylinder pushes the rotary tongs from the mounting arm, the piston compared to the coupling tubes of the rotating tongs It may be positioned in the coupling tubes or the rod head to achieve a phase difference of 90 degrees from the rod head of the rod.

The detachable ridge is made of a block having a flat surface on a rectangular parallelepiped in the coupling tubes or the mounting arm of the rod head of the piston rod or the rotating tongs, or the coupling tubes of the rod head or the rotating tongs of the piston rod or the rectangular parallelepiped in the mounting arm It may be made of a block having at least one curved surface and positioned on the coupling tubes or the rod head.

The mounting arm includes a fixing bracket positioned on one side of the mounting arm when viewed from the other side of the mounting arm, wherein the fixing bracket passes through the cylinder tube on the one surface of the mounting arm Surrounding the tube rotation shaft, the detachable ridge is located below the fixing bracket on the one surface of the mounting arm and located at both edges of the one surface, and is higher than the tube rotation shaft with respect to the one surface of the mounting arm. A support member positioned at a lower level and fixed to the support arm and extending along the longitudinal direction of the support arm to support a straight pillar screw, one side of the support member is located close to the fixing bracket and the support from the bottom A hanging block integrally formed with a member and having a stepped chin at the top, a hanging plate extending from the supporting member on the other side of the supporting member and formed in the shape of an Ottogi, a spring surrounding the pillar screw, and the above of the hanging block on the spring. and the pressure plate passing through the pillar screw while enclosing the head of the hook plate over a stepped jaw, and at least one fixing nut spirally coupled to the pillar screw on the pressure plate, wherein the pressure plate includes the hook block and the It can be elastically supported by the spring between the hanging plates to move along the head of the hanging plate and rise from the upper surface of the hanging block.

The rotary tongs are made relatively flat in the central area between the one end and the other end compared to the one end and the other end of the rotary tongs, and at the one end and the other end with respect to the central area of the rotary tongs. It protrudes in a different direction, and is positioned on both surfaces at right angles to the one surface of the mounting arm through the one end of the rotating tongs to surround the arm rotation shaft passing through the both sides, and in the central region of the rotating tongs. It is located on both sides of the rod head located at the end of the piston rod and has coupling tubes that surround the head rotation shaft passing through the rod head and rotate relatively with respect to the rod head, and at each edge at both edges of the rotation tongs. It has a pressing member facing the detachable ridge, the pressing member, the first pressing portion vertically protruding from the individual edge of the rotary tongs toward the pressing plate, the end of the first pressing portion is located horizontally, The head of the holding plate in the receiving groove, and the pillar screw and the fixing nut through the receiving hole may be formed of a second pressing portion facing the pressing plate.

The detachment induction cylinder includes a piston rod rotationally fixed to the rotation clamp in the central region of the rotation clamp, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod, the piston Before the completion of the execution of the stroke movement of the rod, the pressing member of the rotary tongs is brought into contact with the pressure plate of the detachable ridge, and the rod head toward the fixing bracket to complete the stroke movement of the piston rod. and to slide the second pressing part on the pressing plate while pulling the coupling tubes, and after the completion of the execution of the stroke movement of the piston rod, the second pressing part may be firmly attached to the pressing plate.

Stable detachment device according to the present invention,

The mounting arm of the excavator is individually rotationally fixed and provided with a rotation tongs and a detachment induction cylinder that are rotationally fixed with respect to each other, and a detachable ridge is provided on the occupied area of the rotation tongs on the mounting arm so as to be located on the mounting arm or the rotation tongs or the detachment induction cylinder. and, during the reciprocating motion of the piston rod, when the detachment induction cylinder pulls the rotary tongs toward the mounting arm, the rotary tongs or the detachment induction cylinder are firmly in close contact with the mounting arm,

While manipulating the movement of the bucket and the rotary tongs in the excavator, the hinge area of the mounting arm and the rotary tongs, or the hinge area of the coupling tubes and the rod head, without contacting the cylinder tube of the detachment induction cylinder to the bending resistance reinforcement of the mounting arm Alternatively, unwanted mechanical contact or friction noise can be minimized by firmly attaching the hinge portion of the cylinder tube and the fixing bracket to the mounting arm or the rotating shaft.

1 is a schematic diagram partially showing an excavator according to the prior art;
Figure 2 is a schematic view showing a coupling relationship between the mounting arm and the cylinder tube in the excavator of Figure 1.
3 is a schematic diagram showing a modified example of the mounting arm of FIG.
Figure 4 is a schematic diagram showing a stable detachment device in the excavator according to the first embodiment of the present invention.
5 is a schematic diagram showing a stable detachment device in an excavator according to a second embodiment of the present invention.
6 is a schematic diagram showing a stable detachment device in an excavator according to a third embodiment of the present invention.
7 is a schematic diagram showing a stable detachment device in an excavator according to a fourth embodiment of the present invention.
8 is a schematic diagram showing a stable detachment device in an excavator according to a fifth embodiment of the present invention.
9 is a schematic diagram showing a stable detachment device in an excavator according to a sixth embodiment of the present invention.
10 is a schematic diagram showing a stable detachment device in an excavator according to a seventh embodiment of the present invention.
11 is an image showing the rotating tongs and the detachment induction cylinder in the stable detachment device of FIG.
12 is an image showing the rotating tongs in the stable detachment device of FIG.
13 is a schematic view showing a first modified example replacing the detachment ridge in the stable desorption device of FIGS. 4 to 10 .
14 is a schematic view showing a second modified example for replacing the detachment ridge in the stable desorption device of FIGS. 4 to 10 .
15 is a schematic view showing a bonding state in which the rotating tongs are in contact with the detachable ridges of FIG. 5 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention set forth below refers to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. In the drawings, like reference numerals refer to the same or similar functions in various aspects, and the length, area, thickness, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily practice the present invention.

Figure 4 is a schematic diagram showing a stable detachment device in the excavator according to the first embodiment of the present invention. In this case, Fig. 4 (a) shows the detachment induction cylinder, Fig. 4 (b) shows the coupling relationship between the mounting arm, the rotary tongs and the detachment inducing cylinder, and Fig. 4 (c) is the mounting arm and the rotating tongs. and the positional relationship of the detachment induction cylinder. 4 is described with reference to FIGS. 1 and 11 .

Referring to FIG. 4 , the excavator 148 is similar to the excavator 100 of FIGS. 1 to 3 , but in the excavator 148 , a mounting arm 19 , a rotating tongs 70 and a detachment induction cylinder 124 has a different coupling relationship with the mounting arm 13 and the rotating tongs 70 and the detachment induction cylinder 90 in the excavator 100 of FIGS. 1 to 3 .

When viewed schematically, the mounting arm 19 , the rotating tongs 70 , and the detachment induction cylinder 124 constitute a stable detachment device 144 in the excavator 148 . The stable detachment device 144 is provided in the excavator 148 and interlocks with the movement of the bucket 50 while supporting the bucket ( 50 in FIG. 1 ) of the excavator 148 .

Here, the mounting arm 19 is positioned on the bucket 50 and the arm cylinder (20 in FIG. 1 ) positioned on one side of the mounting arm 19 and a coupling link (FIG. 1 of 30 and 40) through the bucket 50 and made in the shape of a square pillar. The rotating tongs 70 are positioned on the other side of the mounting arm 19 , are rotationally fixed to the mounting arm 19 , and are positioned between the bucket 50 and the mounting arm 19 while protruding from the mounting arm 19 . .

The detachment induction cylinder 124 is located on the other side of the mounting arm 19 and is respectively rotationally fixed to the mounting arm 19 and the rotating tongs 70 while connecting the mounting arm 19 and the rotating tongs 70. With the cylinder tube 119 and the piston rod 115 , the mounting arm 19 is rotated during the relative reciprocating motion of the piston rod 115 compared to the cylinder tube 119 .

The detachment induction cylinder 124 has a detachable ridge 11 in the area occupied by the rotary tongs 70 on the mounting arm 19, and during the reciprocating motion of the piston rod 115, the detachment induction cylinder 124 is When pulling the rotary tongs 70 toward the mounting arm 19, through the detachable ridge 111, before the completion of the stroke movement of the piston rod 115, the detachable induction cylinder to the mounting arm 19. 124 indirectly contact, and after completion of the stroke movement of the piston rod 115, the rotation tongs 70 and the detachment induction cylinder 124 are firmly attached to the mounting arm 19.

Here, before the completion of the stroke movement of the piston rod 115 , the piston rod 115 protrudes from the cylinder tube 119 by 2-3 mm. Looking in more detail, the mounting arm 19, when viewed from the other side of the mounting arm 19, from one side of the mounting arm 19 to the first to located in the first area of the mounting arm (19) It includes a third bending resistance reinforcing bar (1, 2, 3), and a fixing bracket (9) positioned in the second area of the mounting arm (19) on one surface of the mounting arm (19).

The first to third bending resistance reinforcing bars (1, 2, 3) are positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm (19) on one surface of the mounting arm (19), the mounting arm (19) ) is located below the fixing bracket (9) on one side. The fixing bracket 9 surrounds the tube rotation shaft 139 penetrating the hook hole 117 of the cylinder tube 119 on one surface of the mounting arm 19 .

The tube rotation shaft 139 is positioned at a higher level than the first to third bending resistance reinforcement bars 1, 2, 3 with respect to one surface of the mounting arm 19 . The rotary tongs 70 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 70, and one end and the other end with respect to the central region of the rotating tongs 70. protrude in different directions from

In addition, the rotary tongs 70, through one end of the rotary tongs 70, under the first to third bending reinforcing bars (1, 2, 3) both sides forming a right angle with one surface of the mounting arm (19) The amount of the rod head 113 positioned at the end of the piston rod 115 in the central region of the rotary tongs 70 and surrounding the arm rotation shaft 133 passing through the shaft holes (not shown in the drawing) on both sides. It is located on the side and surrounds the head rotation shaft 136 passing through the coupling hole 112 of the rod head 113 and has coupling tubes 64 and 68 that rotate relative to the rod head 113 .

The coupling tubes (64, 68) face the first and third bending resistance reinforcing bars (1, 3). The rod head 113 faces the second bending resistance reinforcement 2 . The detachment induction cylinder 124 includes a piston rod 115 that is rotationally fixed to the rotating tongs 70 in the central region of the rotating tongs 70 and a fixing bracket of the mounting arm 19 while accommodating the piston rod 115 . and a cylinder tube 119 which is rotationally fixed to (9).

In addition, the detachment induction cylinder 124 is in contact with the second bending resistance reinforcement 2 through the detachable protrusion 111 located in the rod head 113 before the completion of the stroke movement of the piston rod 115 . In order to complete the movement of the stroke of the piston rod 115, the rod head 113 and the coupling pipes 64 and 68 are pulled toward the fixing bracket 9 and detached from the second bending resistance reinforcement 2 By sliding the ridge 111 and after completing the stroke movement of the piston rod 115 , the detachable ridge 111 is firmly attached to the second bending resistance reinforcing bar 2 near the cylinder tube 119 , The cylinder tube 118 is spaced in parallel from the second bending resistance reinforcement 2 .

5 is a schematic diagram showing a stable detachment device in an excavator according to a second embodiment of the present invention. In this case, Fig. 5 (a) shows the detachment induction cylinder, Fig. 5 (b) shows the coupling relationship between the mounting arm, the rotary tongs and the detachment inducing cylinder, and Fig. 5 (c) is the mounting arm and the rotating tongs. and the positional relationship of the detachment induction cylinder. It will be described with reference to FIGS. 5 and 1 and FIGS. 4 and 12 .

5 and 12, the excavator 178 is similar to the excavator 148 of FIG. 4, but in the excavator 178, the rotary tongs 160 and the detachment induction cylinder 128 are, in FIG. In the excavator 148 , it has a different coupling relationship with the rotary tongs 70 and the detachment induction cylinder 90 . When viewed schematically, the rotary tongs 160 and the detachment induction cylinder 128 constitute a stable detachment device 174 together with the mounting arm 19 in the excavator 178 .

Here, the rotary tongs 160 have a detachable ridge 153 on the occupied area of the rotary tongs 160 on the mounting arm 19, and during the reciprocating motion of the piston rod 115, the detachment induction cylinder 128. When pulling the rotary tongs 160 toward the mounting arm 19, through the detachable ridge 153, before the completion of the stroke movement of the piston rod 115, the rotating tongs 160 on the mounting arm 19 to indirectly contact, and after completion of the stroke movement of the piston rod 115 , the rotation tongs 160 and the detachment induction cylinder 128 are firmly attached to the mounting arm 19 .

Looking in more detail, the rotary tongs 160 are made relatively flat in the central area between one end and the other end compared to one end and the other end of the rotary tongs 160, and based on the central area of the rotary tongs 160. to protrude in different directions from one end and the other end, and at right angles to one surface of the mounting arm 19 under the first to third bending reinforcing bars 1, 2, 3 through one end of the rotating tongs 160 It surrounds the arm rotation shaft 133 that is located on both sides forming the shaft hole (not shown in the figure) on both sides.

In addition, the rotary tongs 160 are located on both sides of the rod head 113 positioned at the end of the piston rod 115 in the central region of the rotary tongs 160 and the coupling hole 112 of the rod head 113 . ) surrounds the head rotation shaft 136 passing through and has coupling tubes 156 and 159 that rotate relative to the rod head 113 . The coupling tubes 156 and 159 have detachable ridges 153 facing the first and third bending resistance reinforcement bars 1 and 3 .

The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 160 in the central region of the rotary tongs 160 and a fixing bracket of the mounting arm 19 while accommodating the piston rod 115 . Including a cylinder tube 119 that is rotationally fixed to (9), before completion of the stroke movement of the piston rod 115, the rod head 113 and the second bending resistance reinforcement 2 while facing the coupling tubes The detachable ridges 153 positioned at (156, 159) are brought into contact with the first and third bending resistance reinforcing bars (1, 3).

In addition, the detachment induction cylinder 128 pulls the rod head 113 and the coupling tubes 156 and 159 toward the fixing bracket 9 to complete the stroke movement of the piston rod 119 . Sliding the detachable ridges 153 on the first and third bending resistance reinforcing bars 1 and 3, and after completing the execution of the stroke movement of the piston rod 115, the first and third bending near the cylinder tube 119 The cylinder tube 119 is spaced in parallel from the second bending resistance reinforcement 2 by firmly attaching the detachable ridge 153 to the resistance reinforcement bars 1 and 3 .

6 is a schematic diagram showing a stable detachment device in an excavator according to a third embodiment of the present invention. In this case, Fig. 6 (a) shows the base arm, Fig. 6 (b) shows the coupling relationship between the mounting arm, the rotating tongs and the detachment induction cylinder, and Fig. 6 (c) is the mounting arm, the rotating tongs and The positional relationship of the detachment induction cylinder is shown. FIG. 6 is explained with reference to FIG. 5 .

Referring to FIG. 6 , the excavator 208 is similar to the excavator 178 of FIG. 5 , but the mounting arm 190 and the rotating tongs 70 in the excavator 208 are the excavator 178 of FIG. 5 . It has a different coupling relationship with the mounting arm 19 and the rotating tongs 160 in the. When viewed schematically, the mounting arm 190 and the rotating tongs 70 constitute a stable detachment device 204 together with the detachment induction cylinder 128 in the excavator 208 . Here, the mounting arm 190 has a detachable ridge 186 .

Looking in more detail, the mounting arm 190, when viewed from the other side of the mounting arm 190, the first to positioned in the first area of the mounting arm 190 on one surface of the mounting arm 190 A third bending resistance reinforcing bar 181 , 182 , and 184 , and a fixing bracket 188 positioned in the second region of the mounting arm 190 from one surface of the mounting arm 190 .

The first to third bending resistance reinforcing bars 181 , 182 , and 184 are positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm 190 on one surface of the mounting arm 190 , and the mounting arm 190 . ) is located below the fixing bracket 188 on one side. The fixing bracket 188 surrounds the tube rotation shaft 139 penetrating the cylinder tube 119 on one surface of the mounting arm 190 .

The tube rotation shaft 139 is located at a higher level than the first to third bending resistance reinforcement bars 181 , 182 , 184 with respect to one surface of the mounting arm 190 . The detachable ridge 186 is, between the first to third bending resistance reinforcing bars 181, 182, 184, and the fixing bracket 188 between the second bending resistance reinforcing bars 182 and the first and third bending reinforcing bars ( It is located closer to the 181, 184, and protrudes higher than the first to third bending resistance reinforcing bars 181, 182, 184 from one surface of the mounting arm 190.

The rotary tongs 70 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 70, and one end and the other end with respect to the central region of the rotating tongs 70. It protrudes in different directions from and is located on both sides forming a right angle with one side of the mounting arm 190 under the first to third bending reinforcing bars (181, 182, 184) through one end of the rotating tongs (70) and surrounds the arm rotation shaft 133 penetrating both sides.

In addition, the rotating tongs 70 are located on both sides of the rod head 113 located at the end of the piston rod 115 in the central region of the rotating tongs 70 and the head rotating shaft passing through the rod head 113 . It has coupling tubes (64, 68 in FIG. 4) that surround 136 and rotate relative to the rod head 113. Both edges of the rotating tongs 70 face the detachable ridges 186 .

The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 70 in the central region of the rotary tongs 70 and a fixing bracket of the mounting arm 190 while accommodating the piston rod 115 . It includes a cylinder tube 119 that is rotationally fixed to the 188, and before the completion of the stroke movement of the piston rod 115, the first and third bending resistance reinforcing bars 181 and 184 in the mounting arm 190 are located close to each other Both edges of the rotating tongs 70, for example, both blades of the rotating tongs 70, are brought into contact with the detachable ridges 186 to be removed.

In addition, the detachment induction cylinder 128 is detached while pulling the rod head 113 and the coupling tubes 64 and 68 toward the fixing bracket 188 to complete the stroke movement of the piston rod 115 . Sliding the rotary tongs 70 on the ridge 186, and after completion of the stroke movement of the piston rod 115, the first and third bending resistance reinforcing bars 181 and 184 close to the detachable ridge 186 The cylinder tube 119 is spaced in parallel from the second bending resistance reinforcing bar 182 by firmly adhering both edges of the rotating tongs 70 to it.

7 is a schematic diagram showing a stable detachment device in an excavator according to a fourth embodiment of the present invention. In this case, Fig. 7 (a) shows the base arm, Fig. 7 (b) shows the coupling relationship between the mounting arm, the rotating tongs and the detachment induction cylinder, and Fig. 7 (c) is the mounting arm, the rotating tongs and The positional relationship of the detachment induction cylinder is shown. FIG. 7 is explained with reference to FIG. 6 .

Referring to FIG. 7 , the excavator 238 is similar to the excavator 208 of FIG. 6 , but the mounting arm 220 in the excavator 238 is mounted on the arm 190 in the excavator 208 of FIG. 6 . has a different structure from When viewed schematically, the mounting arm 220 constitutes a stable detachment device 234 together with the rotary tongs 70 and the detachment induction cylinder 128 in the excavator 238 . Here, the mounting arm 220 has a detachable ridge 216 .

Looking in more detail, the mounting arm 220, when viewed from the other side of the mounting arm 220, the first to located in the first area of the mounting arm 220 on one surface of the mounting arm 220 It includes a third bending resistance reinforcing bar 211 , 212 , and 214 , and a fixing bracket 218 positioned in the second region of the mounting arm 220 on one surface of the mounting arm 220 .

The first to third bending resistance reinforcing bars 211 , 212 , and 214 are positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm 220 on one surface of the mounting arm 220 , and the mounting arm 220 . ) is located below the fixing bracket 218 on one side. The fixing bracket 218 surrounds the tube rotation shaft 139 penetrating the cylinder tube 119 on one surface of the mounting arm 220 .

The tube rotation shaft 139 is positioned at a higher level than the first to third bending resistance reinforcement bars 211 , 212 , 214 with respect to one surface of the mounting arm 220 . The detachable ridge 216 is located on the first to third bending resistance reinforcement bars 211, 212, 214 from the lower side of the first to third bending resistance reinforcement rods 211, 212, and 214, the first to Connecting the third bending resistance reinforcement (211, 212, 214).

The rotary tongs 70 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 70, and one end and the other end with respect to the central region of the rotating tongs 70. It protrudes in different directions from, and is located on both sides forming a right angle with one side of the mounting arm 220 under the first to third bending reinforcing bars (211, 212, 214) through one end of the rotating tongs (70) and surrounds the arm rotation shaft 133 penetrating both sides.

In addition, the rotating tongs 70 are located on both sides of the rod head 113 located at the end of the piston rod 115 in the central region of the rotating tongs 70 and the head rotating shaft passing through the rod head 113 . It has coupling tubes 64 , 68 surrounding 136 and rotating relative to the rod head 113 . The coupling tubes 64 and 68 and the rod head 113 face the detachable ridge 216 .

The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 70 in the central region of the rotary tongs 70 and a fixing bracket of the mounting arm 220 while accommodating the piston rod 115 . It includes a cylinder tube 119 rotationally fixed to the 218 , and before the completion of the stroke movement of the piston rod 115 , the rod head 113 is brought into contact with the detachable ridge 216 .

In addition, the detachment induction cylinder 128 is detached while pulling the rod head 113 and the coupling tubes 64 and 68 toward the fixing bracket 218 to complete the stroke movement of the piston rod 115 . Sliding the rod head 113 on the ridge 216 , and after completing the stroke movement of the piston rod 115 , the first to third bending resistance reinforcement 211 , 212 , 214 on the detachable ridge 216 . ) by firmly attaching the rod head 113 to the second bending resistance reinforcing bar 212 to parallel the cylinder tube 119 .

8 is a schematic diagram showing a stable detachment device in an excavator according to a fifth embodiment of the present invention. In this case, Fig. 8 (a) shows the base arm, Fig. 8 (b) shows the coupling relationship between the mounting arm, the rotating tongs and the detachment induction cylinder, and Fig. 8 (c) is the mounting arm, the rotating tongs and The positional relationship of the detachment induction cylinder is shown. FIG. 8 is explained with reference to FIG. 7 .

Referring to FIG. 8 , the excavator 268 is similar to the excavator 238 of FIG. 7 , but the mounting arm 250 in the excavator 268 is mounted on the mounting arm 220 in the excavator 238 of FIG. 7 . has a different structure from When viewed schematically, the mounting arm 250 constitutes a stable detachment device 264 together with the rotary tongs 70 and the detachment induction cylinder 128 in the excavator 268 . Here, the mounting arm 250 has a detachable ridge 247 .

In more detail, the mounting arm 250 includes a fixing bracket 249 positioned on one surface of the mounting arm 250 when viewed from the other side of the mounting arm 250 . The fixing bracket 249 surrounds the tube rotation shaft 139 penetrating the cylinder tube 119 on one surface of the mounting arm 250 .

The detachable ridge 247 is located on one surface of the mounting arm 250 , and when viewed in a direction perpendicular to one surface of the mounting arm 250 , as shown in FIG. 8 ( b ), the detachable ridge 247 . ) fills the space between the mounting arm 250 and the cylinder tube 119 in the occupied area, and the first to sequentially positioned in parallel and at right angles to the longitudinal direction of the mounting arm 250 under the fixing bracket 249 Consists of the third protrusion 241 , 243 , 246 , and is positioned at a lower level than the tube rotation shaft 139 with respect to one surface of the mounting arm 250 .

The first and third protrusions 241 and 246 are located on both sides of the cylinder tube 119 and the piston rod 115 when viewed from one surface of the mounting arm 250 . The second ridge 243 has a smaller length than the first and third ridges 241 , 246 and is located below the piston rod 115 .

The rotary tongs 70 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 70, and one end and the other end with respect to the central region of the rotating tongs 70. The arm rotation shaft that protrudes in different directions from and passes through both sides and is positioned on both sides at right angles to one side of the mounting arm 250 under the detachable ridge 247 through one end of the rotating tongs 70 (133) surrounds.

In addition, the rotating tongs 70 are located on both sides of the rod head 113 located at the end of the piston rod 115 in the central region of the rotating tongs 70 and the head rotating shaft passing through the rod head 113 . It has coupling tubes 64 , 68 surrounding 136 and rotating relative to the rod head 113 . The coupling tubes 64 and 68 face the first and third ridges 241 and 246 . The rod head 113 faces the second protrusion 243 .

The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 70 in the central region of the rotary tongs 70 and a fixing bracket of the mounting arm 250 while receiving the piston rod 115 . It includes a cylinder tube 119 rotatably fixed to 249 , and before completion of the stroke movement of the piston rod 115 , the rod head 113 is brought into contact with the second protrusion 243 .

In addition, the detachment induction cylinder 128 pulls the rod head 113 and the coupling tubes 64 and 68 toward the fixing bracket 249 to complete the stroke movement of the piston rod 115 . 2 by sliding the rod head 113 on the raised portion 243, and after completing the stroke movement of the piston rod 115, the rod head 113 is firmly attached to the second raised portion 243 to firmly adhere the first and inserting the cylinder tube 119 between the third protrusions 241 and 246 to face the first and third protrusions 241 and 246 and the coupling tubes 64 and 68 .

9 is a schematic diagram showing a stable detachment device in an excavator according to a sixth embodiment of the present invention. In this case, Fig. 9 (a) shows the base arm, Fig. 9 (b) shows the coupling relationship between the mounting arm, the rotating tongs and the detachment induction cylinder, and Fig. 9 (c) is the mounting arm, the rotating tongs and The positional relationship of the detachment induction cylinder is shown. FIG. 9 is explained with reference to FIG. 8 .

Referring to FIG. 9 , the excavator 298 is similar to the excavator 268 of FIG. 8 , but the mounting arm 280 in the excavator 298 is mounted on the arm 250 in the excavator 268 of FIG. 7 . has a different structure from When viewed schematically, the mounting arm 280 constitutes a stable detachment device 294 together with the rotary tongs 70 and the detachment induction cylinder 128 in the excavator 298 . Here, the mounting arm 280 has a detachable ridge 275 .

In more detail, the mounting arm 280 includes a fixing bracket 278 positioned on one surface of the mounting arm 280 when viewed from the other side of the mounting arm 280 . The fixing bracket 278 surrounds the tube rotation shaft 139 penetrating the cylinder tube 119 on one surface of the mounting arm 280 .

The detachable ridge 275 is located on both edges of one surface on one surface of the mounting arm 280, and when viewed in a direction perpendicular to one surface of the mounting arm 280, as shown in FIG. 9(b), Fills the space between the mounting arm 280 and the cylinder tube 119 in the area occupied by the detachable ridge 275, parallel to and sequentially at right angles to the longitudinal direction of the mounting arm 280 under the fixing bracket 278 Consists of first and second raised portions 272 and 274 to be positioned, and is positioned at a lower level than the tube rotation shaft 139 with respect to one surface of the mounting arm 280 .

The first and second protrusions 272 and 274 are located on both sides of the cylinder tube 119 and the piston rod 115 when viewed from one surface of the mounting arm 280 . The rotary tongs 70 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 70, and one end and the other end with respect to the central region of the rotating tongs 70. protrude in different directions from

In addition, the rotary tongs 70 are located on both sides forming a right angle with one side of the mounting arm 280 under the detachable ridge 275 through one end of the rotary tongs 70 and penetrate both sides. Surrounding the arm rotation shaft 133, located on both sides of the rod head 113 positioned at the end of the piston rod 115 in the central region of the rotation tongs 70, the head rotation shaft 136 passing through the rod head 113 ) and has coupling tubes 64 , 68 that rotate relative to the rod head 113 .

The coupling tubes 64 and 68 face the first and second raised portions 272 and 274 . The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 70 in the central region of the rotary tongs 70 and a fixing bracket of the mounting arm 280 while accommodating the piston rod 115 . It includes a cylinder tube 119 that is rotationally fixed to 278, and before completion of performing the stroke movement of the piston rod 115, the coupling tubes 64 and 68 are connected to the first and second raised portions 272 and 274. make contact with

In addition, the detachment induction cylinder 128 pulls the rod head 113 and the coupling tubes 64 and 68 toward the fixing bracket 278 to complete the stroke movement of the piston rod 115 , Sliding the coupling tubes 64 and 68 on the first and second raised portions 272 and 274, and after completion of performing the stroke movement of the piston rod 115, the first and second raised portions 272 and 274 A cylinder tube 119 is inserted between the first and the raised portions 272 and 274 by firmly adhering the coupling tubes 64 and 68 to the first.

10 is a schematic diagram showing a stable detachment device in an excavator according to a seventh embodiment of the present invention. In this case, Fig. 10 (a) shows the base arm, Fig. 10 (b) shows the coupling relationship between the mounting arm, the rotating tongs and the detachment induction cylinder, and Fig. 10 (c) is the mounting arm, the rotating tongs and The positional relationship of the detachment induction cylinder is shown. FIG. 10 is described with reference to FIG. 9 .

Referring to FIG. 10 , the excavator 328 is similar to the excavator 298 of FIG. 9 , but the mounting arm 310 in the excavator 328 is mounted on the arm 280 in the excavator 298 of FIG. 9 . has a different structure from When viewed schematically, the mounting arm 310 constitutes a stable detachment device 324 together with the rotary tongs 70 and the detachment induction cylinder 128 in the excavator 328 . Here, the mounting arm 310 has a detachable ridge 305 .

In more detail, the mounting arm 310 includes a fixing bracket 308 positioned on one surface of the mounting arm 310 when viewed from the other side of the mounting arm 310 . The fixing bracket 308 surrounds the tube rotation shaft 139 penetrating the cylinder tube 119 on one surface of the mounting arm 310 .

The detachable ridge 305 is located on both edges of one surface on one surface of the mounting arm 310, and when viewed in a direction perpendicular to one surface of the mounting arm 310, as shown in FIG. 10(b), Filling the space between the mounting arm 280 and the piston rod (or the mounting arm 280 and the rod head 113) in the area occupied by the detachable ridge 305, the mounting arm 310 under the fixing bracket 308 Consists of first and second ridges 302 and 304 positioned in parallel and sequentially at right angles to the longitudinal direction of the tube, with respect to one surface of the mounting arm 310, a lower level than the tube rotation shaft 139 is located in

The first and second protrusions 302 and 304 are located on both sides of the rod head 113 in the piston rod 115 when viewed from one surface of the mounting arm 310 . The rotary tongs 70 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 70, and one end and the other end with respect to the central region of the rotating tongs 70. protrude in different directions from

In addition, the rotary tongs 70 are located on both sides forming a right angle with one side of the mounting arm 310 under the detachable ridge 305 through one end of the rotary tongs 70 and penetrate both sides. Surrounding the arm rotation shaft 133, located on both sides of the rod head 113 positioned at the end of the piston rod 115 in the central region of the rotation tongs 70, the head rotation shaft 136 passing through the rod head 113 ) and has coupling tubes 64 , 68 that rotate relative to the rod head 113 .

The coupling tubes 64 , 68 face the first and second ridges 302 , 304 . The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 70 in the central region of the rotating tongs 70 and a fixing bracket of the mounting arm 310 while accommodating the piston rod 115 . and a cylinder tube 119 rotationally fixed to 308 .

In addition, the detachment induction cylinder 128 brings the coupling tubes 64 and 68 into contact with the first and second protrusions 302 and 304 before the completion of the stroke movement of the piston rod 115, and the piston To complete the movement of the stroke of the rod 115, the rod head 113 and the coupling tubes 64 and 68 are pulled toward the fixing bracket 308 while pulling the first and second protrusions 302 and 304. Sliding the coupling pipes 64 and 68, and after completing the execution of the stroke movement of the piston rod 115, the coupling pipes 64 and 68 to the first and second ridges 302 and 304 are firmly fixed. make it tight

11 is an image showing the rotating forceps and the detachment induction cylinder in the stable detachment device of FIG. 4 , and FIG. 12 is an image showing the rotating forceps in the stable detachment device of FIG. 5 . In this case, FIGS. 11 and 12 are explained with reference to FIGS. 4 and 5 .

11 and 12, in the stable detachment device (144 in Fig. 4 or 178 in Fig. 5), the detachment ridge 111 or 153 is, during the reciprocating motion of the piston rod 115, the detachment induction cylinder 124 or 128) when pulling the rotating clamp 70 or 160 toward the mounting arm 19, the coupling tubes 64 & 68, or 156 & 159 of the rotating clamp 70 or 160 and the piston rod 115 The coupling tubes 64 & 68, or 156 & 159 or the rod head 113 are positioned to have the same phase in the rod head 113 .

In addition, the detachable ridge 111 or 153 is, during the reciprocating motion of the piston rod 115, when the detachment induction cylinder 124 or 128 pushes the rotary tongs 70 or 160 from the mounting arm 19, The coupling pipes 64 & 68, or 156 & to form a phase difference of 90 degrees in the rod head 113 of the piston rod 115 compared to the coupling pipes 64 & 68, or 156 & 158 of the rotary tongs 70 or 160 158 ) or rod head 113 .

13 is a schematic view showing a first modified example replacing the detachment ridge in the stable desorption device of FIGS. 4 to 10 . In this case, Fig. 13 is explained with reference to Figs.

13, the detachable ridges 111, 153, 186, 216, 247, 275 or 305 of FIGS. Although the coupling tubes (156 & 159) or the mounting arms (190, 220, 250, 280 or 310) are made of a block having a flat surface in a rectangular parallelepiped, the detachable ridge 330 of FIG. 13 is, in FIGS. 4 to 10 The coupling tubes of the rod head 113 or rotary tongs 160 of the piston rod 115 of FIGS. 4 to 10 to replace the detachable ridges 111, 153, 186, 216, 247, 275 or 305 of (156 & 159) or the mounting arms (190, 220, 250, 280 or 310) may be made of a block having at least one curved surface (S) in a rectangular parallelepiped.

14 is a schematic view showing a second modified example replacing the detachable ridge in the stable desorption device of FIGS. 4 to 10 , and FIG. 15 is a schematic view showing a coupling state in which the rotating tongs are in contact with the detachable ridge of FIG. 5 . In this case, FIGS. 14 and 15 are described with reference to FIGS. 5 and 6 .

14 and 15 , the excavator 390 is similar to the excavator 208 of FIG. 6 , but the mounting arm 340 and the rotating tongs 380 in the excavator 390 are the excavator of FIG. At 208 , it has a structure different from that of the mounting arm 190 and the rotating tongs 70 . When viewed schematically, the mounting arm 340 and the rotating tongs 380 constitute a stable detachment device (not shown in the drawing) together with the detachment induction cylinder (128 in FIG. 6 ) in the excavator 390 . Here, the mounting arm 340 has a detachable ridge 360 .

In more detail, the mounting arm 340 includes a fixing bracket (188 in FIG. 6 ) positioned on one surface of the mounting arm 340 when viewed from the other side of the mounting arm 340 . The fixing bracket 188 surrounds the tube rotation shaft (139 in FIG. 6) penetrating the cylinder tube (119 in FIG. 6) on one surface of the mounting arm 340. The detachable ridge 360 is positioned under the fixing bracket 188 on one surface of the mounting arm 340 and positioned at both edges of the one surface, and the tube rotation shaft is based on one surface of the mounting arm 340 . (139) is located at a lower level.

In addition, the detachable ridge 360 is fixed to the mounting arm 340 and extending along the longitudinal direction of the mounting arm 340 and supporting the pillar screw 355 which is erected upright. A supporting member 351, a supporting member ( 351) is located close to the fixing bracket 188 on one side and forms an integral with the support member 351 at the lower part and has a step chin 352 at the upper part, a support member at the other side of the support member 351 It includes a hanging plate 354 extending from 351 and formed in the shape of Ottogi.

In addition, the detachable ridge 360 is a spring 357 surrounding the column screw 355, and the head of the hanger plate 354 is hung over the step jaw 352 of the hanger block 353 on the spring 357. It further includes a pressure plate 358 that passes through the pillar screw 355 while surrounding it, and at least one fixing nut 359 that is spirally engaged with the pillar screw 355 on the pressure plate 358 .

The pressure plate 358 is elastically supported by a spring 357 between the hook block 353 and the hook plate 354 to move along the head of the hook plate 354 and from the upper surface of the hook block 353 . soars The rotation tongs 380 are made relatively flat in the central region between one end and the other end compared to one end and the other end of the rotating tongs 308, and one end and the other end with respect to the central region of the rotating tongs 380. protrude in different directions from

In addition, the rotary tongs 380 are positioned on both surfaces at right angles to one surface of the mounting arm 340 through one end of the rotary tongs 380 and the arm rotation shaft passing through both surfaces (133 in FIG. 6) Surrounding the, the head rotating shaft ( With coupling tubes (64, 68 in FIG. 5) that surround 136 in FIG. 6 and rotate relative to the rod head 113, detachable ridges 360 at both edges of the rotating tongs 380 at individual edges. and has a pressing member 379 facing it.

The pressing member 379 is positioned horizontally at the end of the first pressing part 372 and the first pressing part 372 vertically protruding from the individual edge of the rotating tongs 380 toward the pressing plate 358. The head of the holding plate 354 in the receiving groove 374, and the post screw 355 and the fixing nut 359 through the receiving hole 376 to the second pressing part 378 facing the pressing plate 358 is done

The detachment induction cylinder 128 includes a piston rod 115 that is rotationally fixed to the rotary tongs 380 in the central region of the rotary tongs 380 and a fixing bracket of the mounting arm 340 while accommodating the piston rod 115 . It includes a cylinder tube 119 that is rotationally fixed to 188, and before completion of the execution of the stroke movement of the piston rod 115, the pressing member 379 of the rotary tongs 380 is detached from the pressure plate of the ridge 360. (358) is brought into contact.

In addition, the detachment induction cylinder 128 pulls the rod head 113 and the coupling tubes 64 and 68 toward the fixing bracket 188 to complete the stroke movement of the piston rod 115 while pulling the pressure plate. The second pressing portion 378 is slid on the 358 and, after the completion of the stroke movement of the piston rod 115 , the second pressing portion 378 is firmly attached to the pressing plate 358 .

1-3; Bend-resistant bracing, 9; fixed bracket
19; Mounting Arm, 64 &68; coupling tube
70; rotating tongs, 111; detachable ridge
113; rod head, 115; piston rod
119; cylinder tube, 124; Desorption Induction Cylinder
133; arm axis of rotation, 136; head rotating shaft
139; tube axis of rotation, 144; stable detachment device
148; excavator

Claims (26)

In the stable detachment device provided in the excavator and interlocking with the movement of the bucket while supporting the bucket of the excavator,
a mounting arm in the shape of a quadrangular pole that is positioned on the bucket and coupled to the bucket through an arm cylinder positioned on one side and a coupling link positioned below;
Rotating tongs positioned on the other side of the mounting arm, rotationally fixed to the mounting arm, and positioned between the bucket and the mounting arm while protruding from the mounting arm; and
It is located on the other side of the mounting arm and has a cylinder tube and a piston rod which are respectively rotationally fixed to the mounting arm and the rotating tongs while connecting the mounting arm and the rotating tongs, and the relative reciprocating motion of the piston rod compared to the cylinder tube and a detachable induction cylinder for rotating the mounting arm while
Mounting arm or rotating tongs or detachable induction cylinder,
Having a detachable ridge on the occupied area of the rotary tongs on the mounting arm,
During the reciprocating motion of the piston rod, when the detachment induction cylinder pulls the rotary tongs toward the mounting arm,
Through the detachable ridge, before the completion of the stroke movement of the piston rod, the rotary tongs or the detachment induction cylinder indirectly contact the mounting arm, and after the completion of the stroke movement of the piston rod, the mounting A stable detachment device that firmly attaches the rotary tongs and the detachment induction cylinder to the arm.
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
First to third bending resistance reinforcing bars positioned in the first region of the mounting arm on one surface of the mounting arm;
a fixing bracket positioned in the second area of the mounting arm on the one surface of the mounting arm;
The first to third bending resistance reinforcing bars,
Positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm on the one surface of the mounting arm,
It is located below the fixing bracket on the one side of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The tube rotation shaft is
A stable detachment device that is positioned at a higher level than the first to third bending resistance reinforcing bars with respect to the one surface of the mounting arm.
3. The method of claim 2,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the first to third bending reinforcement through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
The coupling tubes are
Facing the first and third bending resistance reinforcement,
The rod head,
A stabilizing and detaching device facing the second bending-resisting rib.
4. The method of claim 3,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the execution of the stroke movement of the piston rod, the second bending resistance reinforcement is contacted through the detachable ridge located in the rod head,
To complete the movement of the stroke of the piston rod, sliding the detachable ridge on the second bending resistance reinforcement while pulling the rod head and the coupling tube toward the fixing bracket,
After the completion of the movement of the stroke of the piston rod, the detachable ridge is firmly in close contact with the second bending resistance reinforcement near the cylinder tube to parallel the cylinder tube from the second bending resistance reinforcement, stable, detachment device.
3. The method of claim 2,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the first to third bending reinforcement through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
The coupling tubes are
A stable detachment device having the detachable ridge facing the first and third bending resistance reinforcement.
6. The method of claim 5,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the execution of the stroke movement of the piston rod, while facing the rod head and the second bending resistance reinforcement, the detachable ridges located in the coupling tubes are in contact with the first and third bending resistance reinforcements, and ,
To complete the movement of the stroke of the piston rod, sliding the detachable ridge on the first and third bending resistance reinforcement while pulling the rod head and the coupling tube toward the fixing bracket,
After completion of the movement of the stroke of the piston rod, the cylinder tube is spaced from the second bending resistance reinforcement in parallel by firmly adhering the detachable ridges to the first and third bending resistance reinforcements near the cylinder tube. Letting it, stable detachment device.
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
First to third bending resistance reinforcing bars positioned in the first region of the mounting arm on one surface of the mounting arm;
a fixing bracket positioned in the second area of the mounting arm on the one surface of the mounting arm;
The first to third bending resistance reinforcing bars,
Positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm on the one surface of the mounting arm,
It is located below the fixing bracket on the one side of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The tube rotation shaft is
Located at a higher level than the first to third bending resistance reinforcing bars with respect to the one surface of the mounting arm,
The detachable ridge,
Located closer to the first and third bending reinforcement than the second bending resistance reinforcement between the first to third bending resistance reinforcement and the fixing bracket,
A stable detachment device that protrudes higher than the first to third bending resistance reinforcing bars from the one surface of the mounting arm.
8. The method of claim 7,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the first to third bending reinforcement through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
Both edges of the rotating tongs,
Facing the detachable ridge, a stable detachment device.
9. The method of claim 8,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the movement of the stroke of the piston rod, the both edges of the rotary tongs are brought into contact with the detachable ridges located near the first and third bending resistance reinforcing bars in the mounting arm,
To complete the movement of the stroke of the piston rod, slide the rotary tongs on the detachable ridge while pulling the rod head and coupling tubes toward the fixing bracket,
After the completion of the movement of the stroke of the piston rod, the both edges of the rotary tongs are firmly attached to the detachable ridges near the first and third bending resistance reinforcements to form the cylinder tube from the second bending resistance reinforcement. A stable detachment device that is spaced parallel to each other.
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
First to third bending resistance reinforcing bars positioned in the first region of the mounting arm on one surface of the mounting arm;
a fixing bracket positioned in the second area of the mounting arm on the one surface of the mounting arm;
The first to third bending resistance reinforcing bars,
Positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm on the one surface of the mounting arm,
It is located below the fixing bracket on the one side of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The tube rotation shaft is
Located at a higher level than the first to third bending resistance reinforcing bars with respect to the one surface of the mounting arm,
The detachable ridge,
The first to third bending resistance reinforcement is located on the lower side of the first to third bending resistance reinforcement to connect the first to third bending resistance reinforcement, a stable detachable device.
11. The method of claim 10,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the first to third bending reinforcement through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
The coupling tubes and the rod head,
Facing the detachable ridge, a stable detachment device.
12. The method of claim 11,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the performance of the stroke movement of the piston rod, the rod head is brought into contact with the detachable ridge,
To complete the movement of the stroke of the piston rod, sliding the rod head on the detachable ridge while pulling the rod head and the coupling tubes toward the fixing bracket,
After completion of the movement of the stroke of the piston rod, the rod head is firmly attached to the detachable ridge on the first to third bending resistance reinforcement to parallel the cylinder tube from the second bending resistance reinforcement. Letting it, stable detachment device.
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
It includes a fixing bracket and a detachable ridge positioned on one surface of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The detachable ridge,
It is located on the one side of the mounting arm,
When viewed in a direction perpendicular to the one surface of the mounting arm, the space between the mounting arm and the cylinder tube is filled in the area occupied by the detachable ridge,
Consists of first to third protrusions positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm under the fixing bracket,
It is located at a lower level than the tube rotation axis with respect to the one surface of the mounting arm,
The first and third raised portions,
When viewed from one side of the mounting arm,
Located on both sides of the cylinder tube and the piston rod,
The second raised portion,
having a smaller length than the first and third ridges;
A stable detachment device located below the piston rod.
14. The method of claim 13,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the detachable ridge through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
The coupling tubes are
facing the first and third ridges,
The rod head,
Facing the second ridge, the stable detachment device.
15. The method of claim 14,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the performance of the stroke movement of the piston rod, the rod head is brought into contact with the second raised portion,
To complete the movement of the stroke of the piston rod, sliding the rod head on the second ridge while pulling the rod head and the coupling tubes toward the fixing bracket,
After the completion of the movement of the stroke of the piston rod, the first and third ridges while inserting the cylinder tube between the first and third ridges by firmly adhering the rod head to the second ridges A stable detachment device that faces the base and the coupling tubes.
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
It includes a fixing bracket positioned on one side of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The detachable ridge,
Located on both edges of the one surface on the one surface of the mounting arm,
When viewed in a direction perpendicular to the one surface of the mounting arm, the space between the mounting arm and the cylinder tube is filled in the area occupied by the detachable ridge,
Consists of first and second ridges positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm under the fixing bracket,
It is located at a lower level than the tube rotation axis with respect to the one surface of the mounting arm,
The first and second raised portions,
When viewed from one side of the mounting arm,
A stable detachment device located on both sides of the cylinder tube and the piston rod.
17. The method of claim 16,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the detachable ridge through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
The coupling tubes are
A stable detachment device facing the first and second ridges.
18. The method of claim 17,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the performance of the stroke movement of the piston rod, the coupling tubes are brought into contact with the first and second raised portions,
To complete the movement of the stroke of the piston rod, sliding the coupling pipes on the first and second ridges while pulling the rod head and the coupling pipes toward the fixing bracket,
After the completion of the movement of the stroke of the piston rod, the coupling tube is firmly attached to the first and second raised portions to insert the cylinder tube between the first and second raised portions, a stable detachment device .
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
It includes a fixing bracket positioned on one side of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The detachable ridge,
Located on both edges of the one surface on the one surface of the mounting arm,
When viewed in a direction perpendicular to the one surface of the mounting arm, the space between the mounting arm and the piston head is filled in the area occupied by the detachable ridge,
Consists of first and second ridges positioned in parallel and sequentially at right angles to the longitudinal direction of the mounting arm under the fixing bracket,
It is located at a lower level than the tube rotation axis with respect to the one surface of the mounting arm,
The first and second raised portions,
When viewed from the one side of the mounting arm,
A stable detachment device located on both sides of the rod head in the piston rod.
20. The method of claim 19,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is located on both sides forming a right angle with the one side of the mounting arm under the detachable ridge through the one end of the rotating tongs and surrounds the arm rotation shaft penetrating the both sides,
Having coupling tubes positioned on both sides of the rod head positioned at the ends of the piston rod in the central region of the rotary tongs and surrounding a head rotation shaft passing through the rod head and rotating relatively with respect to the rod head,
The coupling tubes are
A stable detachment device facing the first and second ridges.
21. The method of claim 20,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the performance of the stroke movement of the piston rod, the coupling tubes are brought into contact with the first and second raised portions,
To complete the movement of the stroke of the piston rod, sliding the coupling pipes on the first and second ridges while pulling the rod head and the coupling pipes toward the fixing bracket,
After the completion of the performance of the movement of the stroke of the piston rod, the stable attachment and detachment device for firmly attaching the coupling tubes to the first and second raised portions.
The method of claim 1,
The detachable ridge,
During the reciprocating motion of the piston rod, when the detachment induction cylinder pulls the rotary tongs toward the mounting arm,
It is located in the coupling pipes or the rod head to have the same phase in the coupling pipes of the rotary tongs and the rod head of the piston rod,
During the reciprocating motion of the piston rod, when the detachment induction cylinder pushes the rotary tongs from the mounting arm,
Positioned in the coupling pipes or the rod head to achieve a phase difference of 90 degrees in the rod head of the piston rod compared to the coupling pipes of the rotary tongs, a stable detachment device.
The method of claim 1,
The detachable ridge,
At least one curved surface is made of a block having a flat surface on a rectangular parallelepiped in the coupling tubes of the rod head or rotating tongs of the piston rod or in the mounting arm, or in the coupling tubes of the rod head or rotating tongs of the piston rod or in the mounting arm. A stable detachment device, which is made of a block with an attachment and is located in the coupling tubes or the rod head.
The method of claim 1,
The mounting arm is
When viewed from the other side of the mounting arm,
It includes a fixing bracket positioned on one side of the mounting arm,
The fixing bracket is
Surrounding the tube rotation shaft passing through the cylinder tube on the one surface of the mounting arm,
The detachable ridge,
It is positioned under the fixing bracket on the one surface of the mounting arm and is located at both edges of the one surface,
It is located at a lower level than the tube rotation axis with respect to the one surface of the mounting arm,
A supporting member fixed to the mounting arm and extending along the longitudinal direction of the mounting arm to support a straight pillar screw, located close to the fixing bracket on one side of the supporting member, and integral with the supporting member at the bottom, from the top A hanging block having a stepped jaw, a hanging plate extending from the supporting member on the other side of the supporting member to form a Ottogi shape, a spring enclosing the pillar screw, and the hanging plate over the stepped jaw of the hanging block on the spring and the pressure plate passing through the column screw while enclosing the head of the at least one fixing nut spirally coupled to the column screw on the pressure plate,
The pressure plate is
A stable detachment device that is elastically supported by the spring between the hanger block and the hanger plate, moves along the head of the hanger plate, and rises from the upper surface of the hanger block.
25. The method of claim 24,
The rotating tongs,
It is made relatively flat in the central region between the one end and the other end compared to the one end and the other end of the rotating tongs, and protrudes in different directions from the one end and the other end with respect to the central region of the rotating tongs, ,
It is positioned on both surfaces at right angles to the one surface of the mounting arm through the one end of the rotation tongs and surrounds the arm rotation shaft penetrating the both surfaces,
Located on both sides of the rod head positioned at the end of the piston rod in the central region of the rotary tongs, the coupling tube surrounds the head rotation shaft passing through the rod head and rotates relatively with respect to the rod head,
Having a pressing member facing the detachable ridge on each edge at both edges of the rotary tongs,
The pressing member is
A first pressing part vertically protruding from the individual edge of the rotary tongs toward the pressing plate, the head of the engaging plate in the receiving groove positioned horizontally at the end of the first pressing part, and the pillar screw in the receiving hole and a second pressing part penetrating through the fixing nut and facing the pressing plate, a stable detachable device.
26. The method of claim 25,
The detachment induction cylinder,
A piston rod rotationally fixed to the rotation tongs in the central region of the rotation tongs, and a cylinder tube rotationally fixed to the fixing bracket of the mounting arm while accommodating the piston rod,
Before the completion of the performance of the movement of the stroke of the piston rod, the pressing member of the rotary tongs is brought into contact with the pressing plate of the detachable ridge,
To complete the movement of the stroke of the piston rod, sliding the second pressing part on the pressing plate while pulling the rod head and the coupling tubes toward the fixing bracket,
After the completion of the performance of the movement of the stroke of the piston rod, the second press firmly in close contact with the pressing plate, a stable detachment device.

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